Prehistoric cultural affiliation(s) include Middle Woodland, Late Woodland and Havana-Hopewell Focus dating back to 0.
Many famous people are associated with these Allegan County historic places including Warner P. Sutton, Edward D. Born, William C. Messenger, Dorr E. Felt, Curtis O. Gilkey and Engelbert B. Born.
Some of the country's most noteable architects helped create the Allegan County places including Gordon W. Lloyd, Wolf and Davidson, Milwaukee Bridge & Iron Co., Smith & Nelson Burke, Isaac Fairbanks, Yost Brothers, William K. Johnston, King Iron Bridge Co., Michigan State Highway Department and E. Haines. Prominent architectural styles found in Allegan Country are Italianate, Late Victorian and Bungalow/Craftsman.